Combined cold and hot water spray and shampoo fitting



y 1943- c. M KENDRICK 2,325,333

COMBINED HOT AND COLD WATER SPRAY AND SHAMPOO FITTING Filed Sept, 3,1942 Lmtv C wvam hw/QMcKA HAW WM; yaw.

Patented July 27, 1943 COIVIBINED COLD AND'HOT WATER SPRAY AND SHAMPOOFITTING Charles McKendrick, Edinburgh, Scotland Application September 3,1942, Serial No. 457,218 In Great Britain October 2, 1941 1 Claim. (Cl.137111) The subject of the invention is a combined cold and hot waterspray and shampoo fitting adapted to be connected to cold and hot watersupply systems of unequal or varying pressures, e. g., a cold water mainand a hot water tank, the pressure in the cold water main being higherthan the pressure in the hot water tank.

An object of the invention is to provide a simple spray and shampoofitting ofimproved construction in which the cold water is preventedfrom entering the hot Water system, whereby the possibility of the hotwater tank overflowing and causing flooding is prevented.

A combined cold and hot water spray and shampoo fitting, according tothe invention, incorporates a T-shaped casing provided with a partitionwhich extends longitudinally through the stem thereof and divides saidcasing into two L-shaped passages forming respectively a cold water sideand a hot water side, the cross limb or head of the T-shaped casingbeing provided with a cold water stop valve arranged at one end thereofand a hot water stop valve arranged at the other end thereof, and theouter end of the said stem being provided with an end-plate which, onthehot water side, is formed with a port and, on the cold water side, isfitted with a pipe of relatively small bore which a tube that leads tothe spraying device or shower rose and whichis coupled to the stem ofthe T- shaped casing. I i

In operation, when both stop valves are open,

cold water is discharged from the cold water side of the fittingthrough'the pipe of small bore into the tube leading to the sprayingdevice-in advance of the hot water which enters the said tube from thehot water side of the fitting through the port in the end-plate the coldand hot water supplies mixing in the tube.

' Fig. 1 of the accompanying drawing is a side elevation, partlysectional, of a combined cold and hot water spray and shampoo fittingaccording to the invention, and Fig. 2 is a fragmentary sectional planview through the line II--II of Fig. 1.

extends into nected by way of a supply pipe IS with a cold waterpressure supply system and the valve l1 is connected by way of a supplypipe IS with a passages forming, respectively, a cold water side In thedrawing in is a T-shaped casing presenting a cross-limb or head H andstem l2 provided with a partition I3 which extends longitudinallythrough the stem 12 and divides the casing l9 into two L-shaped passagesforming, respectively, a cold water side l4 and a hot water side It. Thecross-limb or head ll of the T- shaped casing is provided, at one end,with a cold water stop valve l6 and, at the other end, with a hot waterstop valve H. The valve [6 is conhot water supply system.

The end of the stem 12 is closed by an endplate 20 which, on the hotwater side 15, is formed with a port 2| and, on the cold water side M,is fitted with a pipe 22 of relatively small bore. The pipe 22 extendsbeyond the plug 20 into a tube 23 connected to the stem l2 by a couplingnut 24 and furnished, adjacent to its upper end, with a branch 25 forconnection of a tube leading to a spraying device or shower rose.

The end of thepartition 13, where it joins with the head, is for-medwith curved fillets 26 whereby to direct the water from the valves l6,ll into the respective sides I l, 15 without back pressure orturbulence.

It will be seen that, when both the valves l6 and I! are open, coldwater is discharged from the cold water side [4 through the pipe 22 intothe tube leading to the spraying device in advance of the hot waterwhich enters the said tube from the hot water side l5 through the port2|.

I claim:

A combined cold and hot water spray and shampoo fitting incorporating ametal T-shaped casting constituted by a tubular cross limb at rightangles to a tubular stem, the free end of said stem being externallyscrew-threaded, two stop valves arranged one at each end of said crosslimb, a cold Water supply pipe connected to one of said valves, a hotwater supply pipe connected to the other of said valves, an end wall atthe free end of said stem, a plane partitionextending longitudinallythrough the said stem from said end wall of said cross limb and dividingsaid casting into two similar L-shaped and a hot water side, the saidpartition being joined to the wall of the cross limb by curved fillets,a tube arranged against the outer face of the said end wall, ascrew-threaded coupling nut engaging the screw threads on said stem andserving to secure the said tube to the said stem, anoutlet branch whichextends laterally from said tube, a pipe of small bore which penetratesthe said end wall on the cold water side of the partition, extendsthrough the said tube and the said branch and terminates at the outletend of said branch, the end wall being formed on the hot water side ofthe partition with a port to

